4 wire magnetic contact including tamper loop. Surface mount, 5 screw terminals. Switch Dimensions (h x w x d): 64 x 14 x 12mm. Magnet Dimensions (h x w x d): 64 x 14 x 12mm. Gap distance 20mm. ABS plastic housing - White (EMPS85W) or brown (EMPS85/B.01). EN50131-1 Security Grade 1, Environmental Class II housing.